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Filtering by: Has journal Ecological Economics Remove constraint Has journal: Ecological Economics Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • A steady-state model of ecological hierarchy

    Creator:
    Thompson, Grant Garrison
    Abstract:
    A generalized mathematical model of ecosystems is developed. The model begins with the general class of systems known as state-determined systems, in which the time-derivative of each state variable is a function of some subset of the set of all system state variables and .environmental parameters. A formal basis is...
    Resource Type:
    Dissertation
    Full Text:
    , natural resource economics, and organismic systems theory. A Steady-State Model of Ecological

  • Wavelet analysis : linking multi-scalar pattern detection to ecological monitoring

    Creator:
    Anthony, Jill Ada Marie
    Abstract:
    Wavelet analysis is an analytical and modeling tool for optimizing sampling efficiency and accuracy, particularly in the context of designing long-term, large-scale monitoring plans. As a pattern analysis method that accommodates and preserves non-stationarity, wavelet analysis provides novel visualization and analytical capabilities for increased insight into interactions between multi-scalar heterogeneous...
    Resource Type:
    Dissertation
    Full Text:
    : Wavelet Analysis: Linking Multi-scalar Pattern Detection to Ecological Monitoring. Abstract approved

  • The Factors Affecting the Diets of Groundfish in the Gulf of Alaska : Ecological and Modeling Considerations

    Creator:
    Thompson, Kevin A.
    Abstract:
    Marine systems undergo changes in community composition over time as a result of a variety of environmental and anthropogenic factors. Understanding these community changes and the factors that drive them is critical for ecosystem management of marine resources. The Gulf of Alaska (GOA) is a large marine ecosystem that includes...
    Resource Type:
    Dissertation
    Full Text:
    . Title: The Factors Affecting the Diets of Groundfish in the Gulf of Alaska: Ecological and Modeling

  • A theoretical framework for economic fishery management

    Creator:
    Thompson, Grant Garrison
    Abstract:
    A theoretical framework for economic fishery management was developed. Extensive isocline analysis of a general fishery model yielded a detailed look at the possible equilibrium behavior of a system that was allowed to vary in terms of the levels of its environmental parameters, its composition, and the response functions governing...
    Resource Type:
    Masters Thesis
    Full Text:
    A Theoretical Framework for Economic Fishery Management

  • Evaluating tools used to estimate and manage browse available to wintering moose on the Copper River Delta, Alaska

    Creator:
    Smythe, Sharon E.
    Abstract:
    Ungulates comprise some of the most well researched and intensely managed wildlife populations on earth. As such, they are recognized as ideal study subjects for developing and modifying management tools or theories (Danell et al. 1994, Shipley 2010). An introduced moose (Alces alces gigas) population on the Copper River Delta...
    Resource Type:
    Masters Thesis
    Full Text:
    (NCC, i.e., ecological carrying capacity) is the largest, stable population of a specified organism

  • An assessment of community-based adaptive watershed management in three Umpqua Basin Watersheds

    Creator:
    Habron, Geoffrey Bryan
    Abstract:
    The dissertation introduces community-based adaptive watershed management (CAWM) as a holistic conservation framework. The CAWM framework integrates social and ecological suitability to achieve conservation outcomes. The core theoretical concepts consist of adaptive management, adoption-diffusion, symbolic interactionism, community-based conservation, spatial analysis and watershed management. The CAWM framework is applied to the...
    Resource Type:
    Dissertation
    Full Text:
    framework integrates social and ecological suitability to achieve conservation outcomes. The core

  • Ecophysiology of Marine Bivalves : Physiological Rate Processes in Dynamic Environments

    Creator:
    Gray, Matthew W.
    Abstract:
    Marine bivalves are globally recognized as ecologically and commercially valuable species and, for over a century, researchers have been studying their feeding, digestion and other related physiological processes. These studies have shown that marine bivalves have complex feeding and particle processing behaviors to maximize growth in dynamic environmental conditions. Additionally,...
    Resource Type:
    Dissertation
    Full Text:
    into the ecological roles that these animals can play in coastal waters. Suspension-feeding bivalves

  • The influence of biological characteristics on fisheries co-management : a game theory perspective

    Creator:
    Trisak, Jiraporn
    Abstract:
    Co-management is considered an alternative approach to fisheries management, however, not all co-managed fisheries have been successful. Most studies discussing the success and failure of co-management have emphasized economic and social attributes of success and failure, such as fishery rights and institutional arrangements. The effect on co-management of biological characteristics,...
    Resource Type:
    Dissertation
    Full Text:
    co-management have emphasized economic and social attributes of success and failure, such as fishery

  • Arribada nesting of olive ridley sea turtles (Lepidochelys olivacea) at La Escobilla, Mexico

    Creator:
    Ocana, Melissa Ann S.
    Abstract:
    Olive ridley sea turtles (Lepidochelys olivacea) present an interesting case study of the conservation of wildlife species that aggregate in high densities and have served as resources for human consumption. Ridleys exhibit synchronized mass-nesting behavior, during events called "arribadas," where thousands of females lay eggs together in a small area...
    Resource Type:
    Masters Thesis
    Full Text:
    an economic resource. In 2009 at La Escobilla, I explored 1) the historical context of harvest and

  • Born to run? Integrating individual behavior, physiology, and life histories in partially migratory steelhead and rainbow trout (Oncorhynchus mykiss)

    Creator:
    Sloat, Matthew R.
    Abstract:
    Steelhead and rainbow trout are common names for marine-migratory (anadromous) and freshwater-resident forms of Oncorhynchus mykiss, a partially migratory salmonid fish. Anadromous and resident forms are sympatric and can produce offspring with a life history different from their own (i.e., steelhead parents can produce rainbow trout offspring and vice versa)....
    Resource Type:
    Dissertation
    Full Text:
    experiments determined that variation in ecological conditions during early life stages imposes different